Second Class Current in QCD Sum Rules

Details Second Class Current in QCD Sum Rules Second Class Current in QCD Sum Rules

1996-01-24

arxiv.org/abs/hep-ph/9601329v1

Nucl.Phys. A603 (1996) 281-302

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, latex, 7 figures appended as uu-encoded file

Scientific paper

10.1016/0375-9474(96)80003-A

Induced tensor charge of the nucleon $g_T$, which originates from G-parity
violation, is evaluated from QCD sum rules. We find that $g_T/g_A$ with $g_A$
being the axial charge is $ -$0.0152 $\pm$ 0.0053 which is proportional to u-d
quark mass difference. This result is small compared to preliminary analysis of
the experiment, but is consistent with the estimate in the MIT bag model.

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